Bureau of Science and Industry.

Office of the Director.

An old man with a gray beard angrily pushed open the office door and walked in from the outside.

"Lao Li! I wonder what's going on! ”

This movement did not scare Director Li, but it startled his secretary.

If it were someone else, he would not dare to talk to the director of the Bureau of Science and Industry like this, but Academician Xue obviously does not belong to the category of ordinary people.

Not to mention the Science and Industry Bureau, even if he is the leader of the Ministry of Industry and Information Technology, the superior department of the Science and Industry Bureau, he is also courteous to this old gentleman.

Seeing Academician Xue who appeared at the door, Director Li seemed to have guessed why he appeared here, and hurriedly gave a reassuring smile on his face, put down the ballpoint pen in his hand and said.

"Why are you here? Please take a seat...... Xiao Zhou, go pour a cup of tea for Academician Xue, and then help me send the document on the table to the materials room to print fifty copies and send it to Director Liu. ”

"Okay."

Comprehending his boss's intentions, the secretary named Xiao Zhou hurriedly smiled and poured a cup of hot tea for Academician Xue, then picked up the documents on the table and walked out of the office quickly, and took the door with him.

"Humph!" After glancing at the closed door and waiting for the footsteps in the corridor to fade away, Academician Xue picked up the teacup on the table and drank half of it in one gulp, put the cup on the table with a snap, and said angrily, "You still ask me how I came?" I didn't get angry with you, how else could I get here? ”

Unable to speak with Director Li, Academician Xue's mouth was like an open machine gun, and he kept firing in one breath.

"You're the ones who want to do quantum encryption algorithms! Now it's you guys again! Half of the cryptography community in China has come to Beijing, and our work has just begun, so you won't do a word? Is this playing on people like monkeys? ”

Hearing Academician Xue's complaint, Director Li's expression was a little subtly embarrassed. It's true that it's his fault, but he can't be blamed entirely.

"This ...... Things are a little complicated. ”

"What's complicated? Did I warn you? None of the most advanced quantum computers have achieved 100 qubits, and it is simply wrong to regard quantum computers with more than 1000 qubits as imaginary enemies! ”

In the eyes of Academician Xue, engaging in such an inexplicable topic is simply a decision made by a layman patting his head. He has always hated this kind of administrative behavior of pointing fingers at scientific research, which is not only a waste of resources, but also a child's play in research!

Director Li coughed and said.

"The reason for the cancellation of this project is not because of this, and it is not completely canceled, but it is just a strategic adjustment......"

Academician Xue said with an angry face: "That's because of what!" ”

“…… Because someone has already solved this problem. ”

The office fell silent for a moment.

The moment he heard this, Academician Xue was stunned in place, and it took a while for him to come back to his senses.

“…… Solved? What problem was solved? ”

"What else could it be but that quantum encryption algorithm—"

"How is that possible!"

A pair of eyes widened, and Academician Xue's face was full of disbelief expressions, thinking that Director Li was fooling himself, and the expression on his face became even more angry, "Half of the big bulls in the cryptography world are here with me, and you told me that the problem was solved?" Know what you're talking about? ”

For a whole week, their research did not make any substantial progress, and now someone actually told him that the problem was solved? Someone in a place he didn't know, done an algorithm that none of them could even have imagined?

He had never heard anything more ridiculous!

Director Li sighed: "It just so happens that you are here too...... Originally, I was planning to discuss this with you recently. ”

As he spoke, he opened the drawer and took out a disc that had been kept in a special container.

Looking at this disc, Academician Xue frowned. Without waiting for him to ask, Director Li continued.

"That's what I'm talking about in quantum encryption...... Of course, it can only be placed in my office now, and I can't get out of the door next to you. However, I can use my computer to show you a demonstration. ”

Academician Xue had a trace of disapproval written on his face, and snorted coldly.

"I'm not that easy to fool."

Director Li laughed dryly and said, "I know, but after all, we are laymen, and what we really have to refer to is the opinions of you experts...... So, I was going to let you see if this thing could withstand the attack of a quantum computer with more than 1,000 qubits......"

With that, the disc was already in the laptop.

With the sound of the CD-ROM running, Director Li turned the computer around and faced the direction of Academician Xue.

With a suspicious feeling, Academician Xue drank the cup of tea on the table, got up from the sofa, walked to the side of Director Li's desk, and took a chair and sat down.

After holding the mouse and clicking on the screen and opening the file in the driver, Academician Xue looked at the algorithm file presented on the screen line by line.

To be honest, in such a short period of time, it is not at all possible to develop a stronger and new encryption algorithm based on a completely different algorithm logic from the BB84 protocol.

Any research is carried out on the basis of scholars engaged in this field, and the top scholars in this field in China he knows are in his research group.

None of these people could think of a good solution, and he didn't think anyone else could think of it.

Unless, it is to invite "foreign aid".

However, when it comes to national security, the possibility of outsourcing encryption algorithms to foreign research teams is almost zero.

Maintaining a disapproving expression, Academician Xue swept dozens of lines at a glance.

However, as his gaze continued to move downward, the mouse's wheel continued to roll, and the expression on his face suddenly changed slightly.

This time the change is very weak, but in the eyes of Director Li, it is so obvious.

Finally, this stubborn old man couldn't help it.

"This thing...... Who made it? ”

"I really can't tell you this," Hearing this embarrassing question, Director Li coughed dryly and said, "Top secret, understand." ”

There was silence in the office for a few moments.

Staring intently at the computer screen, Academician Xue suddenly looked away from the screen, looked straight at Director Li, and said in a slightly hoarse voice.

“…… Could it be Academician Lu? ”

This is the only way to do it......

Director Li did not speak, and the expression on his face did not change at all.

But sometimes, the absence of expression is also equivalent to an answer.

Turning his head woodenly, Academician Xue's face maintained an expression that had begun to turn into a shock at some point, and he looked at the rest of the algorithm with a dull gaze.

As if he had seen some shocking miracle, he muttered to himself dreamily.

"It turned out to be him...... No wonder. ”

No wonder the project was canceled.

With such an encryption algorithm, there is really nothing to do with them.

It's really embarrassing just to think about it, their more than twenty heads together are not as good as him.

Thinking of this, there was a hint of bitterness in that shocked expression.

In the past, he was still unimpressed by the feelings of those old friends, but now he finally understands why cooperating with Academician Lu is a frustrating thing.

This is not only frustration, but even makes people start to doubt life and feel hopeless.

If you think about it this way, it is not a kind of care not to tell them the reason for the withdrawal of the project......

Seeing that Academician Xue didn't react for a long time, Director Li was a little anxious and urged.

"Don't just sigh...... Tell me about it, what is this encryption algorithm? ”

After a while, Academician Xue spit out a word from his mouth

"Very strong."

"What does it mean to be strong?"

"Meaning, don't say it's 1000 qubits......"

Swallowing his saliva, Academician Xue's voice trembled slightly, and he sighed softly and said, "I'm afraid of 2000 qubits, it's not a problem at all......"